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                <h1 class="title-article">Hive中创建orc表，插入orc表</h1>
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                                <div class="up-time"><span>最后发布:2019-03-15 14:30:48</span><span>首发:2019-03-15 14:30:48</span></div>
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                                            <p>1 创建orc表</p>

<p>CREATE EXTERNAL TABLE foo (<br />
     columnA string,<br />
     columnB string<br />
) PARTITIONED BY (date string)<br />
ROW FORMAT DELIMITED<br />
FIELDS TERMINATED BY "\t"<br />
STORED AS ORC<br />
LOCATION '/path/to/hive/tables/foo';<br />
TBLPROPERTIES ('orc.compress'='SNAPPY');</p>

<p>或者（上面的语句“STORED AS ORC”执行后，再查看建表语句，会发现已自动把INPUTFORMAT、OUTPUTFORMAT 补全，如下所示：）</p>

<p>CREATE EXTERNAL TABLE foo (<br />
     columnA string,<br />
     columnB string<br />
) PARTITIONED BY (date string)<br />
ROW FORMAT DELIMITED<br />
FIELDS TERMINATED BY "\t"<br />
STORED AS INPUTFORMAT <br />
  'org.apache.hadoop.hive.ql.io.orc.OrcInputFormat' <br />
OUTPUTFORMAT <br />
  'org.apache.hadoop.hive.ql.io.orc.OrcOutputFormat'<br />
LOCATION '/path/to/hive/tables/foo';<br />
TBLPROPERTIES ('orc.compress'='SNAPPY');</p>

<p>2</p>

<p>当使用insert语句往lzo表里插入数据时，需要加入下面的参数：</p>

<p>    set hive.default.fileformat=Orc;</p>

<p>---------</p>

<p>要把</p>

<p>SET hive.exec.compress.output=true;<br />
SET mapred.output.compression.codec=com.hadoop.compression.lzo.LzopCodec;</p>

<p>去掉</p>
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